Asked by Kevin

A nickel pyramidal paper weight has a square base of sides 5 cm and a height of 3 cm. What is the mass of a dozen such paper weights if the mass of 1 cm^3 of nickel is 8.9g?
Answered by Reiny
volume of pyramid = (1/3)base x height
= (1/3)(25)(3)
= 25 cm^3

so one pyramid has a mass of 25(8,9) g
then a dozen would have a mass of
25(12)(8.9) g
or 2670 g
Answered by tooba
the question's answer given above is osmly designed


and tnkz for helping us people
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